Try this link:
http://tpwd.state.tx.us/state-parks/
We really have enjoyed the Tyler State Park (http://www.tpwd.state.tx.us/state-parks/tyler)
since it is close to town, but quiet and away from the town traffic.
BUT...you will need to organize your own activities with the other campers. (A 'potluck' dinner with nearby folks is ALWAYS fun!!)
2001 National Tradewinds 7370 mid-entry DP w/CAT 3126b Diesel
Look for the Mardi Gras 'Gators - Laissez le bon temps roulez - Let the good times roll!!